Encryption

Encryption is the process of encoding (or scrambling) electronic information in such a way that it is unreadable to anyone except holders of a specific cryptographic key. The encrypted information is known as cipher text. Encryption protects information against unauthorized disclosure.

Oracle data can be encrypted with the DBMS Obfuscation toolkit (DBMS_OBFUSCATION_TOOLKIT).

You can encrypt network communication between client and database server, see Network Encryption.